ISR of an unstable drug [Bioanalytics]

posted by sarada06884 – India, 2013-10-21 13:55 (4237 d 08:28 ago) – Posting: # 11716
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Dear Ohlbe,

As per EMA's BMV Sec 6: "It is therefore recommended to evaluate accuracy of incurred samples by reanalysis of study samples in separate runs at different days". So doesn't this mean that they have to be run in seperate batches and the ISR be performed on diffrent day?

I have come across a regulatory inspector who insisted that repeats samples be run in separate batches. In a study we had only a single repeat and since there was only a single repeat in the entire study we analyzed this repeat along with last batch of subject samples. This was properly named indicating that this was a repeat.

The inspector insisted that even though there was a single repeat in the entire study this cannot be clubbed with subject samples although properly named and has to be repeated in a separate batch. So can be extrapolated to ISR samples also?

Regards
P.S.Srinivas

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